Emergency Medical Hologram, an artificial person who is intended to serve as a supplement or replacement for a ships medical officer in an emergency. EMH's can only exist within holographic facilities such as a suitably equipped sickbay or a holodeck.5

A component of Starship engine systems. Damage to the EPS manifold caused engine power loss and shutdown. In 2153, Captain Archer expected to take down the main power system of a Borg assimilated Tarkalean ship by destroying its EPS manifold with a pair of photon torpedo hits. He was unable to do so as the NX-01 was incapacitated. However, he did beam into the ship close to the EPS manifold and destroy it with grenades.7

When the NX-01 was captured by Triannon fanatics, the crew sabotaged the EPS manifold to cause the ship to lose power. On the NX-01 the system was located in on Deck D, section J-15.8

In 2154 Captain Archer disabled the alternate timeline version of the NX-01 by beaming its EPS manifold off the ship during combat.9

Element of the weapons systems of an NX class starship. If the synchroniser was not reset when connecting certain systems to the power grid, it could cause the person working on it to have their eyebrows singed.12

A type of radiation which can mutate plasma plague or accelerate its growth. In 2295 Doctor Susan Nuress used Eichner radiation to create new strains of plasma plague during an outbreak in the Oby System. Eichner radiation can be produced by produced by a subspace phase inverter and certain cyanoacrylates.16

Typically, the part of a Federation Starship in which the fuel, power, propulsion and other major systems are located.14Some designs such as the Miranda and Akira have merged the engineering hull into the Saucer section.27

Small capsule which is ejected from a Starship when it seems certain that it will be destroyed. Escape pods can generally carry several people.27Kirk was ejected from the USS Enterprise in 2258 and landed on the the ice planet Delta Vega29

A limit which applies to warp drive systems. According to Eugene's limit Warp 10 could not be achieved because this involved travelling at infinite velocity. The Federation long suspected that the barrier could be circumvented to allow warp factors above 10 to be reached, and attempted to do this with the Excelsior class Starship. The attempt failed, and the Federation has never achieved a practical transwarp drive. The shuttle Cochrane did achieve warp 10 in 2372, allowing it to occupy every point in the universe simultaneously, but practical difficulties kept the system from being developed. Several examples of alien transwarp drives have been observed.30

Enery field that can surround a planet and cause a time shift in sub-space radio signals passing through it. Interaction with active sensor scans can cause a quantum reaction leading to a surge of metreon radiation which can be hazardous to ships.34